1. Chem. Fibers Int., No. 3, 136, 144, 155, 182 (2008).
2. Man-Made Fiber Year Book, 39, 41, 40 (October, 2008).
3. RCC. News//Petrochemistry (10.21.2008, 11.10.2008, 08.27.2008).
4. E. M. Aizenshtein, Legprombiznes. Direktor, No. 10 (109), 10-16 (2008).
5. Pakko Groff, No. 5 (59), 34 (2008).